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AMSOIL Signature Series 5W-30 100% Synthetic Motor OilQuart Bottle
Product code : ASLQT-EA
AMSOIL Signature Series 5W-30 100% Synthetic Motor OilQuart Bottle
Product code : ASLQT-EA
Current price:
$17.99
Retail Price
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Estimated delivery by Thu, Oct 29
to Columbus - 43215.
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A New Level of Motor Oil Technology
- Protects – Ultimate long-life anti-wear protection
- Cleans – Fights sludge and carbon buildup1
- Adapts – Responds to changing conditions
- Performs – Proven beyond the standard2
1Based on Sequence VH and IIIH tests.
2Based on double-length Sequence IIIH test. -
We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.
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We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
About this item
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Custom-Built to Outperform
AMSOIL Signature Series 100% Synthetic Motor Oil is formulated for drivers who demand the absolute best engine protection. Built with advanced synthetic base oils and a precision-engineered additive system, it is designed to control wear, resist volatility and maintain viscosity under extreme heat, pressure and cold-start conditions. The result is uncompromising film strength, cleaner components and protection that pushes beyond industry standards into a class of its own.
Modern engines place unprecedented stress on motor oil through turbocharging, direct injection, higher temperatures and extended service intervals. Signature Series is engineered to meet those challenges head on, delivering more protection, performance and confidence mile after mile, even during extreme use.See the Product Data Bulletin for full details.
2X BETTER Protection Against Volatility
AMSOIL Signature Series delivers 2X better protection against volatility,3 helping reduce oil consumption, minimize top-offs and keep engines cleaner over time.
3Based on AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil compared to the API SQ limit using the ASTM D5800 Noack volatility test.
Guards Against LSPI
Low-speed pre-ignition (LSPI) remains a serious concern in today’s turbocharged, direct-injection engines, where uncontrolled combustion events can damage pistons and other critical components, especially as motor oil ages. AMSOIL Signature Series 100% Synthetic Motor Oil is engineered to help prevent LSPI by maintaining a strong, stable formulation that continues to deliver outstanding performance throughout the drain interval. Even after 25,000 miles of use, Signature Series delivers 4X more piston protection against LSPI4 than the industry standard requires.
4Using AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil following a 25,000-mile service interval in the Sequence IX aged-oil LSPI test.
Preserves Horsepower and Torque
AMSOIL Signature Series 100% Synthetic Motor Oil is built to help engines run stronger, longer5 – helping to protect engines from performance loss throughout their life.
5Using Signature Series 100% Synthetic 5W-30 Motor Oil in a 2025 Ford F-150 Raptor in a 125K-mile accumulation study. Based on comparative start- and end-of-test horsepower and torque.
Proven Cleaning Power
In Sequence IIIH testing, AMSOIL Signature Series delivers 72% more protection against piston deposits than required by industry standards,6 helping ensure cleaner pistons and consistent performance over time.
6Based on AMSOIL Signature Series 5W-30 in the Sequence IIIH Test.
Even after doubling the length of the Sequence IIIH test, Signature Series provided 31% better protection than required,7 demonstrating its ability to maintain cleanliness far beyond industry standards.
7Based on AMSOIL Signature Series 5W-30 in a double-length Sequence IIIH test.
No Sludge, Just Protection
During a 125K-mile accumulation study on a 2025 Ford F-150 Raptor, the engine experienced 0% oil screen plugging.8
8As demonstrated in a 125K-mile accumulation study on a 2025 Ford F-150 Raptor which had 0% plugging.
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star rating
Oil changeBy CHRISTOPHER, a Verified Buyer from Deleware, my driveway on October 24, 2026Great oil, easy pouring.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Use instead of 0w16By DAVID, a Verified Buyer from Florida on October 24, 2026I use the 10w30 instead of the 0w16 specked by Toyota Much quieter keeps engine clean Change at 5 k miles 100 k on engine and runs great Also use power foam the night before oil change on very warm engineBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
It's the only oil I'll runBy JOE, a Verified Buyer from Idaho on October 24, 2026Amzoil is the only oil I run on my bikes or my truckBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Great oilBy JAY, a Verified Buyer on October 24, 2026Only oil I will use been running it since it came never once have I had oil related problems.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
ProductBy DAVID, a Verified Buyer on October 24, 2026Best product on the market. I use this in my 2024 Chevrolet trax and other things I own.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
ProductBy DAVID, a Verified Buyer on October 24, 2026Best product on the market. I use this in my 2017 Silverado.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Game ChangerBy MARIANO, a Verified Buyer from Illinois on October 23, 2026I drive a Jeep Renegade which is notorious for oil consumption. After going through different store bought oil brands and on average, it burning up to almost a quart of oil on every 4000 mile interval oil change, I've decided to switch to Amsoil to see how it performs. I've gone through two cycles of of oil changes with Amsoil and haven't had any issues with oil consumption at 4000 mile oil change interval's. Amsoil has been vastly superior to the store bought oil brands.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Simply the Best Synthetic Lubricants on the MarketBy STEVE, a Verified Buyer from Arizona on October 23, 2026This oil, like all the other AMSOIL lubricants, are far superior to any others on the market. I’ve been using them exclusively in my garden equipment, motorcycles, 4x4’s and cars for over 25 years and have never had a lubricant issue or problem. I get better mileage and cooler running performance than before and the customer service is always great. I recently bought a 1963 Thunderbird and they provided me with a complete list of lubricants and filters, right down to the correct fluid for the convertible hydraulic cylinders. Great products, great service; I’ll be a customer for life.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
2026 Chevy tracBy DENNIS, a Verified Buyer from Pensacola on October 22, 2026First oil change at 1,000 miles. Only oil I trust to protect my new engineBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Stuff works greatBy ALEX, a Verified Buyer from AZ on October 21, 2026Man I really love this stuff. And with modern engine tolerances, I don't worry about running this stuff in my car.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Compare Motor Oil
Data Bulletins-
A New Level of Motor Oil Technology
- Protects – Ultimate long-life anti-wear protection
- Cleans – Fights sludge and carbon buildup1
- Adapts – Responds to changing conditions
- Performs – Proven beyond the standard2
1Based on Sequence VH and IIIH tests.
2Based on double-length Sequence IIIH test. -
We offer easy returns for customers. If your product is unused and unopened, you may return it within 30 days for a full refund of the purchase price. View full AMSOIL Return Policy.
-
We accept Visa, Mastercard, American Express, Discover and PayPal, and provide secure checkout and encrypted payment processing.
-
Custom-Built to Outperform
AMSOIL Signature Series 100% Synthetic Motor Oil is formulated for drivers who demand the absolute best engine protection. Built with advanced synthetic base oils and a precision-engineered additive system, it is designed to control wear, resist volatility and maintain viscosity under extreme heat, pressure and cold-start conditions. The result is uncompromising film strength, cleaner components and protection that pushes beyond industry standards into a class of its own.
Modern engines place unprecedented stress on motor oil through turbocharging, direct injection, higher temperatures and extended service intervals. Signature Series is engineered to meet those challenges head on, delivering more protection, performance and confidence mile after mile, even during extreme use.See the Product Data Bulletin for full details.
2X BETTER Protection Against Volatility
AMSOIL Signature Series delivers 2X better protection against volatility,3 helping reduce oil consumption, minimize top-offs and keep engines cleaner over time.
3Based on AMSOIL Signature Series 0W-20 100% Synthetic Motor Oil compared to the API SQ limit using the ASTM D5800 Noack volatility test.
Guards Against LSPI
Low-speed pre-ignition (LSPI) remains a serious concern in today’s turbocharged, direct-injection engines, where uncontrolled combustion events can damage pistons and other critical components, especially as motor oil ages. AMSOIL Signature Series 100% Synthetic Motor Oil is engineered to help prevent LSPI by maintaining a strong, stable formulation that continues to deliver outstanding performance throughout the drain interval. Even after 25,000 miles of use, Signature Series delivers 4X more piston protection against LSPI4 than the industry standard requires.
4Using AMSOIL Signature Series 5W-30 100% Synthetic Motor Oil following a 25,000-mile service interval in the Sequence IX aged-oil LSPI test.
Preserves Horsepower and Torque
AMSOIL Signature Series 100% Synthetic Motor Oil is built to help engines run stronger, longer5 – helping to protect engines from performance loss throughout their life.
5Using Signature Series 100% Synthetic 5W-30 Motor Oil in a 2025 Ford F-150 Raptor in a 125K-mile accumulation study. Based on comparative start- and end-of-test horsepower and torque.
Proven Cleaning Power
In Sequence IIIH testing, AMSOIL Signature Series delivers 72% more protection against piston deposits than required by industry standards,6 helping ensure cleaner pistons and consistent performance over time.
6Based on AMSOIL Signature Series 5W-30 in the Sequence IIIH Test.
Even after doubling the length of the Sequence IIIH test, Signature Series provided 31% better protection than required,7 demonstrating its ability to maintain cleanliness far beyond industry standards.
7Based on AMSOIL Signature Series 5W-30 in a double-length Sequence IIIH test.
No Sludge, Just Protection
During a 125K-mile accumulation study on a 2025 Ford F-150 Raptor, the engine experienced 0% oil screen plugging.8
8As demonstrated in a 125K-mile accumulation study on a 2025 Ford F-150 Raptor which had 0% plugging.
-
-
-
star rating
Oil changeBy CHRISTOPHER, a Verified Buyer from Deleware, my driveway on October 24, 2026Great oil, easy pouring.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Use instead of 0w16By DAVID, a Verified Buyer from Florida on October 24, 2026I use the 10w30 instead of the 0w16 specked by Toyota Much quieter keeps engine clean Change at 5 k miles 100 k on engine and runs great Also use power foam the night before oil change on very warm engineBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
It's the only oil I'll runBy JOE, a Verified Buyer from Idaho on October 24, 2026Amzoil is the only oil I run on my bikes or my truckBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Great oilBy JAY, a Verified Buyer on October 24, 2026Only oil I will use been running it since it came never once have I had oil related problems.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
ProductBy DAVID, a Verified Buyer on October 24, 2026Best product on the market. I use this in my 2024 Chevrolet trax and other things I own.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
ProductBy DAVID, a Verified Buyer on October 24, 2026Best product on the market. I use this in my 2017 Silverado.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Game ChangerBy MARIANO, a Verified Buyer from Illinois on October 23, 2026I drive a Jeep Renegade which is notorious for oil consumption. After going through different store bought oil brands and on average, it burning up to almost a quart of oil on every 4000 mile interval oil change, I've decided to switch to Amsoil to see how it performs. I've gone through two cycles of of oil changes with Amsoil and haven't had any issues with oil consumption at 4000 mile oil change interval's. Amsoil has been vastly superior to the store bought oil brands.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Simply the Best Synthetic Lubricants on the MarketBy STEVE, a Verified Buyer from Arizona on October 23, 2026This oil, like all the other AMSOIL lubricants, are far superior to any others on the market. I’ve been using them exclusively in my garden equipment, motorcycles, 4x4’s and cars for over 25 years and have never had a lubricant issue or problem. I get better mileage and cooler running performance than before and the customer service is always great. I recently bought a 1963 Thunderbird and they provided me with a complete list of lubricants and filters, right down to the correct fluid for the convertible hydraulic cylinders. Great products, great service; I’ll be a customer for life.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
2026 Chevy tracBy DENNIS, a Verified Buyer from Pensacola on October 22, 2026First oil change at 1,000 miles. Only oil I trust to protect my new engineBottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
Stuff works greatBy ALEX, a Verified Buyer from AZ on October 21, 2026Man I really love this stuff. And with modern engine tolerances, I don't worry about running this stuff in my car.Bottom LineYes, I would recommend this to a friend.Was this review helpful?
-
star rating
